Brautomat32

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Brautomat32 is a brewing and fermenting controller for ESP32. It provides a practical, browser-based control interface for brew day and fermentation.

Important for version 1.60

When updating from version 1.59 or older, run AutoTune once after the update.

Firmware test status

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Download

| Release type | Download | | ------------ | -------- | | Release | | | Development | |

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Installation

1. Download Brautomat ESP32.
2. Unzip the file.
3. Run Flashen.cmd.

The ZIP archive already includes esptool.

Usually not required, but sometimes needed on Windows: CP210x USB to UART Bridge Virtual COM Port (VCP) driver - Silicon Labs Download

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Features

Brautomat is a standalone brewing controller with support for:

• GGM induction cooker control
• Relay-based heater control
• Webhook-based control
• Integrated PID control
• PID AutoTune
• DS18B20 digital sensors
• PT100x analog sensors via MAX31865
• Mash plan management
  • automatic heat-up and hold
  • automatic rest timer handling
  • actuator actions in mash steps
  • up to 30 mash steps
• Up to 3 kettle channels
  • mash kettle
  • SUD/MLT kettle
  • HLT/NACHGUSS kettle
• Kettle hardware profiles
• Fermenter mode (beta)
• Actuator control (agitators, pumps, etc.)
• PWM output control
• Temperature charting
• MP3 alarms and toast messages
• Recipe import
  • kleinerBrauhelfer2
  • Maische Malz und Mehr
  • BrewFather
• Recipe export
• BrewFather recipe/batch API support
• Backup and restore
• Nextion 3.5" HMI touch display (optional)
• WebUpdate for firmware updates
• Multilingual UI support
• Dashboard mode (1.60+)

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Documentation

• Instructions & description
• Forum Hobbybrauer (German)
• Changelog

What's new in 1.60

Detailed technical update notes are available here:

• What's new in 1.60

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Web interface

Brautomat runs in modern browsers on tablet, smartphone, and PC.

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Nextion HMI touch display (optional)

Brautomat provides three display views:

• Overview - shows all configured kettles
• Mash view - shows kettle 1 process data
• Manual control (GGM IDS2) - direct power control

Note: Display support is optional. Supported models are Nextion ITEAD HMI 3.5" (Basic/Enhanced/Discovery series).

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Multilingual

Brautomat32 supports (almost) any number of languages.

Support the project by adding a new language or improving existing translations.

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Circuit board 2.1

A dedicated circuit board for ESP32 D1 Mini NodeMCU is available. It includes:

• screw terminals for GPIOs
• dedicated GGM IDS interface
• three DS18B20 sensor ports

Gerber files are stored in the Gehaeuse folder.

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Case

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Pinout

The following assignment applies to ESP32 D1 Mini NodeMCU boards (for example AZ-Delivery).

GPIO mapping

| Name | GPIO | Input | Output | Notes | | ---- | ---- | ----- | ------ | ----- | | D0 | GPIO026 | ok | ok | | | D1 | GPIO022 | ok | ok | | | D2 | GPIO021 | ok | ok | | | D3 | GPIO017 | ok | ok | DS18B20 | | D4 | GPIO016 | ok | ok | | | D5 | GPIO018 | ok | ok | GGM IDS interrupt (blue/green) | | D6 | GPIO019 | ok | ok | GGM IDS command (yellow) | | D7 | GPIO023 | ok | ok | GGM IDS relay (white) | | D8 | GPIO005 | ok | ok | Buzzer | | D9 | GPIO027 | ok | ok | SCLK PT100x | | D10 | GPIO025 | ok | ok | MISO PT100x | | D11 | GPIO032 | ok | ok | MOSI PT100x | | D12 | GPIO012 | (ok) | ok | Boot fails if pulled high (TDI, strapping) | | D13 | GPIO004 | ok | ok | CS0 PT100x | | D14 | GPIO000 | pullUp | (ok) | Must be LOW to enter flash mode | | D15 | GPIO002 | ok | ok | Onboard LED, must be LOW to enter flash mode | | D16 | GPIO033 | ok | ok | CS1 PT100x | | D17 | GPIO014 | ok | ok | CS2 PT100x | | D18 | GPIO015 | ok | ok | | | D19 | GPIO013 | ok | ok | | | D20 | GPIO010 | (ok) | (ok) | SD3 SPI flash |

Pins connected to onboard flash (CMD, CLK, SD0-SD3) are not recommended for regular GPIO use.

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MP3 files

Legal note: "Boxing Bell" (info), "Short School Bell" (error), "Ding sound effect" (warning), and "Success sound effect" (success) are from Free Sounds Library.

• Source: freesoundslibrary.com
• License: Attribution 4.0 International (CC BY 4.0) (commercial and non-commercial use)

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Community and support

• GitHub Discussions
• Report an issue
• If you like this project, consider giving it a star.

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